Separable snap-fastener element



May 13, 19 30.

M. F. CARR SEPARABLE SNAP FASTENER ELEHEHT Filed April 18, 1928 I :zvezaior:

Moses 60,1-? 21 MBM/WW Patented May I3, 1930 i UNITED 1 STA ES PATENT; OFFICE moses r. calm, or rnxnveron, MASSACHUSETTS, ASSIGNOR, BY MESNE) ass'renmnnrs, 'ro UNITED-CARR FASTENER CORPORATION, or CAMBRIDGE, MASSACHUSETTS, A.

CORPORATION OF MASSACHUSETTS SEPARABI'E SNAP-FASTENER ELEMENT Application filed April 18,

I My invention aims to provide improvements in separable fasteners and more particularly to fastener elements which are adapted to be secured to sheet metal structures which are inaccessible at their inner faces.

In the drawings, which illustrate preferredembodiments of my invention Figure 1 is a plan section taken through aportion of a wind shield post showing a stud secured thereto in accordance with the invention;

Fig. 2 ie a section showin a portion of a supporting structure and a astener member before the attaching means has been expand-' 3 is a section taken on Figure 1; and

Fig. 4 is a vertical sectionshowing a sec.- ond form of stud member as it appears when attached to a supporting structure. v Referring to the embodiments of my invention illustrated by the drawings, I have shown snap fastener members which are particularly, though not exclusively, adapted for attachment to a relatively thinsupporting structure such assheet metal. The fastener member shown in Figs. 1, 2 and 3 is provided with a hollow body portion preferably formed from a single piece of sheet metal pressed out to the desired shape. In this instance, I have provided a socket-receiv ing ortion .1 at one end which includes the hea portion 2, the neck 3 and the base flange 4. At the other end, I'have provideda cup-- shaped attaching portion 5 integral with the flange 4 and having an outer peripheral the line of wall 6 which is adapted tobe expanded to secure the fastener member to a support 7, as shown in Figs. 1 and 3. I

The attaching portion is preferably pro- 'vided with a bottom in which a hole 8 is formed to,aid in attachment of the fastener, as hereinafter described. v

Within the cup-shaped attaching portion 5,, I have assembled an expansible disc 9 having a hump portion 10, as illustrated by Fig.

2." The disc 9 preferably fits tightly against the inner face of the wall 6 so as. not to fall out of placeduring shipment of the fasteners.

At the outer end of the socket receiving disc 9..

'tion. P

1928. Serial No. 270,914.

portion 1, the metal is bent inwardly so that it extends into the interior of the body portion and surrounds an aperture 11 through which access may be had to the hump 10 of the The method of attaching the fastener element above described is simple and particularlyjadapted for securing snap fastener ele ments to sheet metal objects and for use on objects such as wind shield posts (Fig. 1) the 0 inside of which is not accessible. Further- I more, the attachmentis such that only a; relatively small space is required beyond the inner face of the object.

l/Vhen securing a fastener unit to a wind shield post, as shown in the drawings,- the attaching portion 2 is passed into a preformed-hole, as shown in Fig. 2. Then a suitable tool is ressedagainst the end of the hump 10 to atten it and expand the disc 9 0 which in turn expands the wall 6 of the attaching portion beyond the inner face of the wall of the post, as shown in Figs. 1 and 3. A The hole 8 in the bottom of the attaching portion aids in permitting the metal to expand more readily.

In Fig. .4, I have illustrated a fastener unit which is the same in all respects to that shown and described in connection with Figs. 1 through 3, except that the cup portion 5 is divided by a number of slits 12 which make it ,somewhat easier to expand the cup portion 5.

ence should be made to the following claims to indicate, the scope of my invention.

Claims: 1. A snap fastener member comprising a. fastener-receiving portion, -a cup-shaped attaching portion extending from said fastenerreceivin portion, anda disc-like. member located within said cup-shaped member and having a hump which is adapted to be'flattened to enlarge the diameter of said disclike member, thereby. to expand the peripheral wall of said cup-shaped attaching por- 2. Asnap fastener member comprising .a fastener-receiving portion, a cup-shaped at taching portion integral with and extending from the said fastener-receiving portion and a relatively thin disc assembled within said attaching portion and having a hump formed therein whereby when flattened said disc will take the form of a flat enlarged plate and thereb expand the peripheral wall of the attaching portion.

3. A snap fastener stud comprising a socket-receiving portion 1, an attaching portion 5 havin slits 12, and an expansible disc 9 having a ump 10 formed therein whereby when said expansible disc 9 is flattened it will take the form of a flat enlarged plate and thereby expand the peripheral wall 6 of the attaching portion 5.

In testimony whereof, I have signed my name to this specification.

MOSES F. CARE. 

